Python API for PPP packet

The system provides a Python object for PPP packet encapsulated in PPPoE packets: alc.ppp.

Use alc.pppoe.getPPP() to get the alc.ppp object in the input PPPoE packet. This class only supports following control level protocol:

Table: PPP header field attributes displays information about PPP header field attributes.

Table: PPP header field attributes
Class attributes	PPP header field	Access
alc.ppp.protocol	Integer, protocol field in ppp header	Read
alc.ppp.code	Integer, code field in ppp protocol header	Read
alc.ppp.id	Integer, identifier field in ppp protocol header	Read
alc.ppp.len	Integer, length field in ppp protocol header	Read

The following is a list of functions of alc.ppp:

alc.ppp.getOptionList()

Returns a tuple that includes type of existing PPP options in the packet. The order of the element in the tuple is as same as the options appear in the packet. If there are multiple instances of same option, then each instance is one element in the tuple.
alc.ppp.get(op-type)

Returns a tuple of strings, each string represent one instance of the specified option, the value of this string is exact bytes of the option_data as it appears in packet (excludes option_type and option_len); if the option does not exist, return (); if a specific instance’s option_length=0, return ‟” for this instance.